diff --git a/tests/netgen/random/invalid_value/errors.netgen b/tests/netgen/random/invalid_value/errors.netgen
new file mode 100644
index 000000000000..04223672de9b
--- /dev/null
+++ b/tests/netgen/random/invalid_value/errors.netgen
@@ -0,0 +1,2 @@
+Error: Option 'random-connectivity' requires a value below 0.999
+Quitting (on error).
diff --git a/tests/netgen/random/invalid_value/exitcode.netgen b/tests/netgen/random/invalid_value/exitcode.netgen
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/tests/netgen/random/invalid_value/exitcode.netgen
@@ -0,0 +1 @@
+1
diff --git a/tests/netgen/random/invalid_value/options.netgen b/tests/netgen/random/invalid_value/options.netgen
new file mode 100644
index 000000000000..80a513ab6516
--- /dev/null
+++ b/tests/netgen/random/invalid_value/options.netgen
@@ -0,0 +1,2 @@
+--rand -o net.net.xml --rand.iterations=200
+--rand.connectivity 1
diff --git a/tests/netgen/random/invalid_value/output.netgen b/tests/netgen/random/invalid_value/output.netgen
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tests/netgen/random/testsuite.netgen b/tests/netgen/random/testsuite.netgen
index dbfe47f383b2..781da0ce9898 100644
--- a/tests/netgen/random/testsuite.netgen
+++ b/tests/netgen/random/testsuite.netgen
@@ -37,7 +37,7 @@ random_grid
 random_grid2
 
 # avoid geometry-like junctions (even when the default type is traffic_light)
-# 	
+# 
 random_grid_removeGeometry
 
 # different min-distance and max-distance
@@ -51,3 +51,4 @@ renumber
 
 # add turning lanes
 turnlanes
+invalid_value